Home / 125,791.77-173,617.43-72,112.80

Finding the Fourth Proportional to 125,791.77, 173,617.43 and 72,112.80

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Solution

The fourth proportional to 125,791.77, 173,617.43 and 72,112.80 is: 99,529.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,791.77 : 173,617.43 = 72,112.80 : x
  2. Step 2: Convert to fraction form
    125,791.77/173,617.43 = 72,112.80/x
  3. Step 3: Cross multiply
    125,791.77x = 173,617.43 × 72,112.80
  4. Step 4: Simplify right side
    125,791.77x = 12,520,038,645.54
  5. Step 5: Solve for x
    x = 12,520,038,645.54/125,791.77
  6. Step 6: Final answer
    x = 99,529.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.